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Ionic liquid spontaneous combustion temperature measuring device

A technology of temperature measuring device and ionic liquid, which is applied in the direction of thermal development of materials, etc., can solve problems such as unsuitable ionic liquid, achieve the effect of adding anti-tempering device, simple structure, and enhanced safety

Pending Publication Date: 2020-04-10
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the single heat treatment and atmosphere of the self-ignition point temperature measuring device commonly used in the market is meaningless for the self-ignition of ionic liquids, and the definition of self-ignition point of general combustibles is obviously not suitable for ionic liquids.

Method used

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  • Ionic liquid spontaneous combustion temperature measuring device
  • Ionic liquid spontaneous combustion temperature measuring device
  • Ionic liquid spontaneous combustion temperature measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The temperature measurement of gas phase and liquid phase when 1-ethyl-2,3-dimethylimidazolium nitrate spontaneously ignites, the steps are as follows.

[0031] Step 1: Place the ionic liquid

[0032] Put 10mg of 1-ethyl-2,3-dimethylimidazole nitrate on a watch glass, place the watch glass in the primary combustion tube, place the primary combustion tube on the heating plate, and assemble the ionic liquid spontaneous combustion test temperature device.

[0033] Step Two: Set the Mood

[0034] Close the inlet valve, open the gas outlet valve of the gas chamber, open the gas cylinder valve A, adjust the gas flow meter A, fill the gas chamber with gas A, close the gas chamber outlet valve, observe the pressure sensor B, and close the gas cylinder valve when the required pressure is reached. A. Open the gas cylinder valve B and gas flow meter B, observe the pressure sensor B, close the gas cylinder valve B and gas flow meter B when the required pressure is reached, and ad...

Embodiment 2

[0041] The present invention can also be used as an observation device for the spontaneous combustion phenomenon of the ionic liquid, and can simply identify whether the ionic liquid can undergo the spontaneous combustion phenomenon, and the steps are as follows.

[0042] As in Example 1, place 1-ethyl-2,3-dimethylimidazole nitrate, install a self-ignition temperature measuring device and set the atmosphere.

[0043] Set up a program temperature control device, raise the temperature to 400°C at a rate of 10K / min, and record it with a high-speed camera. After the experiment is over, use a high-speed camera to determine whether there is a flame. If there is a flame, you can observe the size, shape, and duration of the flame. Time, etc.; if there is no flame, it can be determined that 1-ethyl-2,3-dimethylimidazolium nitrate will not spontaneously ignite at 400 °C.

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Abstract

The invention discloses an ionic liquid spontaneous combustion temperature measuring device, and belongs to the field of ionic liquid spontaneous combustion temperature measurement. The device comprises a heat preservation combustion mechanism, a combustion process recording mechanism, a program temperature control mechanism and a gas supply and collection device. A watch glass and a first-stage combustion tube are arranged in a second-stage combustion tube and form a heat preservation combustion mechanism with the heating plate. A temperature recording device enters the secondary combustion tube through three temperature measuring thermocouples. A pressure recording device respectively enters the secondary combustion tube and the air chamber through two pressure sensors to form a combustion process recording mechanism together with the high-speed camera. The program temperature control device is connected with the heating plate through a heat transfer wire and a calorimetric wire, andtwo air paths are connected into the air chamber to form an air supply and collection device together with the balloon. The thermal decomposition process of the ionic liquid is influenced through thedesign of multiple gas paths, pressure adjustment and program temperature control, and the temperatures of a gas phase and a liquid phase during spontaneous combustion of the ionic liquid are measured in combination with a high-speed camera shooting and temperature recording device.

Description

technical field [0001] The invention relates to an ionic liquid spontaneous combustion temperature measuring device, in particular to a measurement of the temperature of the gas phase and liquid phase when the ionic liquid is spontaneously ignited. Background technique [0002] Ionic liquids have high thermal stability, negligible vapor pressure, wide liquid temperature range, and good controllable solubility for polar and non-polar substances. Therefore, ionic liquids are considered to be green solvents that can replace traditional organic solvents. And used in various fields of chemical production. For example, alkylimidazole chloroaluminate ionic liquid is used as a catalyst in C 4 Alkylation. Although ionic liquids have excellent thermal stability compared with traditional organic solvents, their thermal stability still needs to be evaluated when they are applied in the industrial field to avoid safety accidents such as fires caused by thermal runaway. However, the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/24
CPCG01N25/24
Inventor 刘上豪孙同张斌
Owner ANHUI UNIV OF SCI & TECH
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